Upcoming Marathon Races In Colorado, US in October, 2025

Name: Blue Sky Marathon & Half
Start: 2025-10-18
End: 2025-10-18
Location: Fort Collins

Colorado Springs Marathon, Half, 5K, and Kids K

Colorado Springs, CO

Saturday, October 4th, 2025

Marathon

Half

Trail

West Elk Challenge Trail Marathon

Crawford, CO

Saturday, October 4th, 2025

Marathon

Trail

Windsor Marathon, Half Marathon, 10k & 5k

Windsor, CO

Sunday, October 5th, 2025

Marathon

Half

10K

Trail

The Long View Marathon

Fort Collins, CO

Saturday, October 11th, 2025

Half

Marathon

Blue Sky Marathon & Half

Fort Collins, CO

Saturday, October 18th, 2025

Half

Marathon

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